embassy-appointment-n8n

code-node.js

const vision = require("@google-cloud/vision");
const puppeteer = require("puppeteer");
const fs = require("fs-extra");

const URL = "https://YOUR_EMBASSY_URL_AND_THE_PAGE";

const browser = await puppeteer.connect({
  browserWSEndpoint: `ws://browserless:3000?token=TOKEN_HERE`,
  args: [`--window-size=1024,860`],
  defaultViewport: {
    width: 1024,
    height: 860,
  },
});

const page = await browser.newPage();
await page.goto(URL, { waitUntil: "networkidle0" });

const client = new vision.ImageAnnotatorClient({
  credentials: "GET_SERVICE_ACCOUNT_JSON_FROM_GCP_CONSOLE",
});

const captchaImg = await page.screenshot({
  clip: {
    height: 50,
    width: 150,
    x: 360,
    y: 460,
  },
});

fs.writeFileSync("captcha.jpeg", captchaImg);

const [result] = await client.documentTextDetection({
  image: { content: captchaImg },
});

const fullTextAnnotation = result.fullTextAnnotation;
const captcha = fullTextAnnotation.text;

await page.type("#ctl00_MainContent_txtCode", captcha);

await page.click("input[type=submit]");

const afterCaptchaContent = await page.content();

if (afterCaptchaContent.includes("правильно")) throw new Error("wrong captcha");

fs.writeFileSync("screenshot1.jpeg", await page.screenshot());

await page.waitForSelector("#ctl00_MainContent_ButtonB", {
  visible: true,
  timeout: 1000,
});

await page.click("input[type=image]", { waitUntil: "networkidle0" });

await page.reload({ waitUntil: "networkidle0" });

const content = await page.content();

fs.writeFileSync("screenshot2.jpeg", await page.screenshot());

if (content.includes("Извините")) {
  return { result: "Still no availability 🙁", captcha };
}

return { result: "Availability found 🎉🔥💦🎉🔥💦", captcha };

infs.sh

mkdir /tmp/n8n_image_builder
rm /tmp/n8n_image_builder/Dockerfile
sudo echo '
FROM n8nio/n8n:latest

RUN apk add --update python3 py3-pip

RUN npm install -g uuid
RUN npm install -g lodash
RUN npm install -g puppeteer
RUN npm install -g fs-extra
RUN npm install -g @google-cloud/vision

RUN CHMOD -R 777 /data

VOLUME ['/home/node/.n8n']

' >/tmp/n8n_image_builder/Dockerfile
cd /tmp/n8n_image_builder/
sudo docker build -t sad-n8n .


sudo docker run -d --name browserless \
 --restart always \
 -p 3330:3000 \
 -e "TOKEN=_____TOKEN_HERE_____" \
 -e "ENABLE_CORS=true" \
 -e "FUNCTION_BUILT_INS=[\"url\", \"util\"]" \
 -e "FUNCTION_EXTERNALS=[\"request\", \"fetch\"]" \
 -e "PREBOOT_CHROME=true" \
 -e "KEEP_ALIVE=true" \
 browserless/chrome

base_data_path="/home/something/docker"
cname="n8n"
sudo docker remove ${cname} --force
sudo docker run -it -d \
    --restart always \
    --name ${cname} \
    -e NODE_FUNCTION_ALLOW_BUILTIN=* \
    -e NODE_FUNCTION_ALLOW_EXTERNAL=* \
    -e N8N_ENCRYPTION_KEY=____N8N_ENCRYPTION_KEY_HERE____ \
    -e N8N_USER_MANAGEMENT_DISABLED=false \
    -e N8N_HOST=n8n.something.xyz \
    -e WEBHOOK_URL=https://n8n.something.com/ \
    -p 5678:5678 \
    -v ${base_data_path}/${cname}:/home/node/.n8n \
    -l traefik.backend=${cname} \
    -l traefik.docker.network=bridge \
    -l traefik.enable=true \
    -l traefik.frontend.entryPoints=http \
    -l traefik.frontend.rule=Host:n8n.something.com \
    --link browserless:browserless \
    sad-n8n